package com.sky.service.admin.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.EmployeeNameExistException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.result.PageResult;
import com.sky.service.admin.EmployeeService;
import com.sky.utils.JwtUtil;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl  implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();//

        //1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(username); //

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void insert(EmployeeDTO employeeDTO) {
        Employee dbEmployee = employeeMapper.getByUsername(employeeDTO.getUsername());
        if (dbEmployee!=null){
            throw new EmployeeNameExistException(dbEmployee.getName()+"已存在");
        }
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
        // employee.setCreateTime(LocalDateTime.now());
        // employee.setUpdateTime(LocalDateTime.now());
        // employee.setCreateUser(BaseContext.getCurrentId());
        // employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }

/**
 * 分页查询
 * @param employeePageQueryDTO
 * @return
 */
@Override
public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
    PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
    Page<Employee> employeePage = employeeMapper.pageQuery(employeePageQueryDTO);

    return new PageResult(employeePage.getTotal(),employeePage.getResult());
}

/**
 * 启用禁用员工账号
 * @param status
 * @param id
 */
@Override
public void startOrStop(Integer status, Long id) {
    employeeMapper.startOrStop(status,id);
}

/**
 * 根据id查询员工信息
 * @param id
 * @return
 */
@Override
// public Employee getById(Long id) {
//     return employeeMapper.getById(id);
// }
public Employee getById(Long id) {
    Employee employee = employeeMapper.getById(id);
    //更安全
    employee.setPassword("****");
    return employee;
}

/**
 * 编辑员工信息
 * @param employee
 */
@Override
public void update(Employee employee) {
    // employee.setUpdateTime(LocalDateTime.now());
    // employee.setUpdateUser(BaseContext.getCurrentId());
    employeeMapper.update(employee);
}
}
